Microscope apparatus.



A. CORNELL 6L F. N. DAVIDSON. MICROSCOPE APPARATUS.

APPLICATION man MAR. 22. |915.

1,161,848. I Patented Nov. 3o, 1915.

A f 5% A A s O COLUMBIA PLANounAPH CD.. WASHINGTON, DA c.

l ST2 serra ic; i

ALFRED CORNELL, or roivianinen, ann rannnnicitiva'rnaninn navinsoiv, or v LonnonnncLanmsnin conivnLL nssienonro sain navinson.

iviionosoorn israeliane Application led March 22,1915. Serial No. 16,100. I

To all whom 'it may concern.'

Be it known that we, ALFRED CORNELL, a subject of the King of England, Yresiding at rYonbridge, county of Kent, England, and Eannnnicii Niiriniivini. DavinsoN, a subject of the King of England, residing in London, England, have invented certain new and usetul improvements in Microscope Apparatus,

y of which the following iS SPCCCatOn- This invention is for improvements in or relating to microscope appara-tus, and has for one of its objects to provide an improved and cheap iorm of apparatus of great magniifying power, which may be used both for Aobservations and photography. l l

The primary featureloi the invention consists in the combination orP two compound microscopes, one,v the primary, to produce an image in air of the object inspected, and thecther, the secondary, to magnify that image. Conveniently, this Y combination takes the form in which theatoresaidisecondary has a microscope stage, and the said primary is adjustably mounted at oron the under side ot that stage. Conveniently also the primary microscopeis provided with a stage to receive the objectto be inspected.

For a more complete understanding Vof the invention reference is directed to theaccompanying drawings wherein there is illusrated, by way `of example only, one constructionalv `form of vmicroscope apparatus according to the invention.' Y

ln these drawingsz-Figure l is aY perf" spective view of the apparatus, certain parts being broken away, and other parts shown in section; and Fig. 2 is a diagrammatic.

view of one arrangement of lenses.

Like letters of reference refer to throughout thedrawings. ri`he apparatus illustrated comprises a standv A supporting a microscope tube B' having an objective B1 and an eye-piece B2 of'any suitable nature.' rlhis tube B is carried by a rack vC adjustable in the stand A` by the linger nuts A1, and the objective B1 is adjustable in relation to the eye-piece B2 by Va linger nut B3 operating in conjunctionV with the spring B4; this arrangement is well known as theineadjustmentf The stand A also'carries a stage D having clips Dlto vhold in place a slide or other object to be stage D however there isl mounted another'V microscope tube vE having anobjective like partsV As thus far describedthe appara- 1 Specification of Letters Patent. Pai-,enfeNQv 3Q', 1915.

and an eye-piece E2, which' latter in the constructionshown taires the'form Vcfa planoconvex lens. A. meniscus lens or a combination of lenses might be substituted for this planof-conveX lens it' desired. The objective El of course projects an imager-ini air, t'. e. inside-the tubelE, and the eye-piece E2 mag@ nilies thatimage and projects it as asecondv image in air as will be hereinafter described with reference more particularly to Fig. 2

of the drawings.

The tube Eis mounted on the under-side of the stage D inan under'itting D2-pro-VV jectingfromathe stage, and conveniently the tube E is simplyheld fi'ictionally inthe tit-y tiiigD2. The objectiveE1 is shown as'carried by a tube E2 which slides in the tube E and is held frictionallyin position therein, for the purpose 'of altering the relationship between the objective VE1 and the eye-piece E3 when necessary. The tubes E and E3 are provided `with internal stop diaphragms E4. It may be advisable in some cases to provide theJ tubev E with the stops and objective in fixednpositions therein and so do away with tube E3. Y

'Carried by a tube F which slides on the i itselfjprojectedin air at O1 by the objectiveV E1 and eye-piece E2.

y Thislimage C1 is picked up by the secondary microscope objective B1 and eye-piece'B2 toiform an image C2' upon the retinaot vthe eye et a person looking into the microscope (see Fi 2). intermediate images O3 and C4 Vare also formed.` `lt'will be understood that'the illustration ci the images in Fig.v 2 is purely diagrammatical and that no attempty has been made to represent theY various magnifications that occur. Y Y

lf'the eye-piece B2 and its tube B of the secondary microscopebe removed, Vand a camera put in its place thescreen or plate thereof would receive an image, and in this mannerY the apparatus may be adapted for photography.

conveniently be Y ice ' microscopes, orfit may beembodied as one part 'of aycomplete apparatus comprising two microscopes.

It will be seen that the general arrangement adopted issomewhat similari to that :shown and described inthe specication of the, prior United States Patent No. 1,128,7 61 ofAlfred Cornell, who is one of the present applicants.l jMoreover, the primary micro? V Vscope is Vfitted with stopsas shown in the Vtelescope-objective tube ofthe said prior -specification,-l A. difference between the present invention and this prior arrangement is; that a microscope and its accompanying fittings are substituted for the tube containing a telescope-objective described in the; said'k prior specification.

The stage of the primary microscope E is shown. as being readily removable. If 'it be taken away andthe objective El beremoved from the tube E, and neXt the lens E? forming the eye-piece of the microscope 'E be reversed in and with the tube E,jso that the convex surface stillpoints toward theobject to be observed, theinstrument will have becomeconverted into the combination ofgmicroscopeland telescope shown and described in vthe aforesaidprior United States Patent,No.1,128,761.` It is one of the feai tures of the present invention, so to arv range the tubegE and its fittings that the conversion just kdescribed may readily be 4effected: 1t is, of course, not essential to re- Yverse the lensE2 in its mount, sovlong as the mount itself, z'. c. the tube E, be reversed, butby arranging'the convex surface of the lens to facek toward the object to be viewed, better results will be obtained.

The. invention'is, of course, not limited to the precise details of construction hereinbefore specified, since these may be modifiedv in certain respects Without departing from VtheiSjiiritand yscope of the invention.

AVlhat we claimasour invention and desirey to secure by Letters Patentiszl. The combination of two compound `microscopes one, the primary, to produce an imagein airof the object inspected, and the other, the secondary, to magnify that image. f

2. The combination of two compoundmie croscopes, one, the primary', to produce an o croscopes.

croscopes, one, the primary, to produce an image in air of the object inspected, and the other, the secondary, tomagnify that image; aV stage intermediate thetwo microscopes, and means to adjustably mount the primary microscope on the underside of the stage.

5. The combination of two compound microscopes, one, the primary, to produce an image lin air of the object inspected, and the other, the secondary, to magnify that image; a stage yintermediate the twolmicroscopes, and a second stage adjacent the end of ,the -primary to receive the object'.

6. The vcombination of two compoundomicroscopes, one (a), theprimary microscope provided with anl objective lens to project an image in air of the object inspected, and ay planoconvex lens 4`to magnify said image and project a second image in air, and the 'other (b) the secondary microscope, to magnify ,the last named image.

The combination of two compound microscopes, one (a), rthe primary microscope provided with an objective lens to project an image in air of theobject inspected, and a meniscus lens to magnify said image and project a second image in air, and theother the secondary microscope, to magnify the last named image.y l

8. The combination of two compound microscopes, one (a) the primary microscope tofproduce an imagein air. of the object inspected and comprising a tube provided at vone-end with a removable objective lens and at they other yend with a positive lens, and the otherV (b) the secondary microscope to magnify thefimage projected by said positive lens; astage intermediate the two microscopes, and a carrieronthennderside of said stage and adaptedto engage either end vof theprimarymicroscope tube, for the pur- Iny testimony whereof we have signed our names to, thisl specificationin the presence of.v two subscribing witnesses.,

Armata CORNELL.

i, A FREDERICK NATHANIEL DAVIDSON.

Witnesses; f

ERNEST VW. Mo ss, RoNLo' S. DOILEYMORE.- 

